波打つ平面

波打つ平面

- 参考 -
nanlow - 【AS3】DispalyObject3Dの頂点データを取得
http://www.nanlow.com/blog/archives/2009/07/270409.php

...
@author tkinjo

by tkinjo 16 Aug 2009

Tags

3d pv3d vertex3D wave
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/**
 * Copyright tkinjo ( http://wonderfl.net/user/tkinjo )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/nDfQ
 */

package 
{
	/**
	 * 波打つ平面
	 * 
	 * - 参考 -
	 * nanlow - 【AS3】DispalyObject3Dの頂点データを取得
	 * http://www.nanlow.com/blog/archives/2009/07/270409.php
	 */
	
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	import org.papervision3d.core.geom.renderables.Vertex3D;
	import org.papervision3d.core.proto.CameraObject3D;
	import org.papervision3d.materials.BitmapMaterial;
	import org.papervision3d.materials.WireframeMaterial;
	import org.papervision3d.objects.primitives.Plane;
	import org.papervision3d.scenes.Scene3D;
	import org.papervision3d.view.AbstractView;
	import org.papervision3d.view.BasicView;
	
	[SWF(width = "465", height = "465", frameRate = "60", backgroundColor = "#ffffff")]
	/**
	 * ...
	 * @author tkinjo
	 */
	public class Main extends Sprite 
	{
		private const PLANE_WIDTH:Number = 200;
		private const PLANE_HEIGHT:Number = 200;
		private const PLANE_SEGMENTS_W:uint = 10;
		private const PLANE_SEGMENTS_H:uint = 10;
		
		private const FREQUENCY:Number = 1;
		private const WAVELENGTH:Number = 20;
		private const AMPLITUDE:Number = 20;
		private const SPEED:uint = 1;
		
		private var plane:Plane;
		
		private var outputtingSignal:Vector.<Number>;
		private var nonOutputSignal:Vector.<Number>;
		
		public function Main():void 
		{
			if (stage) init();
			else addEventListener(Event.ADDED_TO_STAGE, init);
		}
		
		private function init(e:Event = null):void 
		{
			removeEventListener(Event.ADDED_TO_STAGE, init);
			// entry point
			
			outputtingSignal = new Vector.<Number>;
			nonOutputSignal = new Vector.<Number>;
			for ( var i:uint = 0; i < stage.stageWidth; i++ ) {
				
				outputtingSignal.push( 0 );
			}
			
			var noiseBitmapData:BitmapData = createNoiseBitmapData( PLANE_WIDTH, PLANE_HEIGHT );
			
			setupNoiseBitmap( noiseBitmapData );
			
			setupPV3D( noiseBitmapData );
			
			addEventListener( Event.ENTER_FRAME, enterFrameHandler );
			stage.addEventListener( MouseEvent.MOUSE_DOWN, mouseDownHandler );
		}
		
		/**
		 * 
		 * @param	event
		 */
		private function enterFrameHandler( event:Event ):void {
			
			var planeVertices:Array = plane.geometry.vertices;
			
			for ( var i:uint = 0; i < PLANE_SEGMENTS_W + 1; i++ ) {
				
				for ( var j:uint = 0; j < PLANE_SEGMENTS_H + 1; j++ ) {
					
					var vertex:Vertex3D = planeVertices[ j + ( ( PLANE_SEGMENTS_W + 1 ) * i ) ] as Vertex3D;
					vertex.z = outputtingSignal[ i + j ];
				}
			}
			
			// シフト処理
			for ( i = 0; i < SPEED; i++ ) {
				
				outputtingSignal.pop();
				
				if ( nonOutputSignal.length ) {
					
					outputtingSignal.unshift( nonOutputSignal[ 0 ] );
					nonOutputSignal.shift();
					
				} else {
					
					outputtingSignal.unshift( 0 );
				}
			}
			
			/**
			 * オブジェクト回転
			 */
			plane.rotationY = 360 * ( mouseX - ( stage.stageWidth / 2 ) ) / stage.stageWidth;
			plane.rotationX = 360 * ( mouseY - ( stage.stageHeight / 2 ) ) / stage.stageHeight;
		}
		
		/**
		 * PV3D の設定をします。
		 */
		private function setupPV3D( noiseBitmapData:BitmapData ):void {
			
			var view:AbstractView = new BasicView( stage.stageWidth, stage.stageHeight / 2 );
			addChild( view );
			
			var scene:Scene3D = view.scene;
			
			var material:BitmapMaterial = new BitmapMaterial( noiseBitmapData );
			//var material:WireframeMaterial = new WireframeMaterial();
			material.doubleSided = true;
			
			plane = new Plane( material, PLANE_WIDTH, PLANE_HEIGHT, PLANE_SEGMENTS_W, PLANE_SEGMENTS_H );

			scene.addChild( plane );
			
			var camera:CameraObject3D = view.camera;
			camera.z = -( camera.focus * camera.zoom );
			
			view.startRendering();
		}
		
		/**
		 * ノイズビットマップデータを生成します。
		 */
		private function createNoiseBitmapData( width:int, height:int ):BitmapData {
			
			var noiseBitmapData:BitmapData = new BitmapData( width, height );
			noiseBitmapData.noise( 0 );
			
			return noiseBitmapData;
		}
		
		/**
		 * ノイズビットマップを配置します。
		 */
		private function setupNoiseBitmap( noiseBitmapData:BitmapData ):void {
			
			var noiseBitmap:Bitmap = new Bitmap( noiseBitmapData );
			noiseBitmap.x = stage.stageWidth - noiseBitmap.width;
			noiseBitmap.y = stage.stageHeight - noiseBitmap.height;
			addChild( noiseBitmap );
		}
		
		/**
		 * 波形生成
		 * 
		 * @param	event
		 */
		private function mouseDownHandler( event:MouseEvent ):void {
			
			for ( var i:uint = 0; i < WAVELENGTH; i++ ) {
				
				var degrees:Number = i * ( 360 / WAVELENGTH );
				var radian:Number = degrees * ( Math.PI / 180 ) * FREQUENCY;
				var signal:Number = ( Math.sin( radian ) * AMPLITUDE );
				
				if ( i < nonOutputSignal.length )
					nonOutputSignal[ i ] += signal;
					
				else
					nonOutputSignal.push( signal );
			}
		}
	}
	
}